Combination lock



C. L'ANDERSON AND W. H. VAN DYKE.

COMBINATION LOCK.

APPLICATION FILED OCT. 20, 1921.

1,423,384. Patented y 18, 1922. 2 sums-sum 1.

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Ihlnl i K I (I HM Q Q G C. J. ANDERSON AND W. H. VAN DYKE.

COMBINATION LOCK.

APPLICATION FILED OCT. 20, 1921.

1,428,884.. Patented July 18, 1922*.

2 SHEETS-SHEET 2.

INVENTOR.

A TTORNEY.

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CHARLES J. ANDERSON AND WILLIAM VAN DYKE, OE CQRNING, NEW ICOMBINATEIOLN LOCK.

Specification of Letters Patent.

Patented uly 18,

Application filed October 29, 1921. Seriall lo. 509,116.

To all whom it may concern Be it known that we, CHARLES J. ANDER- soNand VVILL'JAM H. VAN DYKE, citizens of the United States, residing atCorning, in the county of Steuben and State of New York, have inventedcertain new and useful Improvements in Combination Locks of whichconstruction as hereinafter shown and described and then specificallypomted out in the claims, and in the'drawings illustrative of thepreferredembodiment o l the inven tion:-"

Figure 1 is a side elevation of a portion of a door and'its janrb withthe improved lock applied. v Figure 2 is an enlarged sectional detail,Figure 3 is an enlarged sectional elevationj Figure 4 is an enlargedsectional detail.

Figure 5 is a detail of the swinging rack bars.

Figure 6 is a detached perspective View 01 the sliding bolt.

The improved device may be readily adapted for use in securely locking amovable structure or member to a stationary member, or to lock twomovable members together, but is more particularly adapted 't'orsecuring a sliding car door to its ainb or casing, and for the purposeof illustra tion is shown thus applied, a portion er the door beingindicated at 10 and the jamb at 11. i

Attached to the jamb 11 is a casing or ho'using 12 having" an internaltransverse stop 13, and attached tothe door 10 another and larger casing14:.

Pivot-ed at 15 within the casing 14 is a lock lever 16 adapted to'enterthe casing 12 and having a hook 17 at one end to engage over the stop13, as shown in Figure 3.

The inner part ofthe lever 16 engages in a recess in the back wall ofthe casing 14, and is yieldably held in stop engaging position by aspring 18. 1 i

A. bolt 19 is slidably disposed in a guideway 20 in the rear wall of thecasing 14 and held in position by a keeper plate 21. The bolt 19 'isformed with a'notcli 22 in one edge and a longitudinally directed gearrack; 23 in the other edge as shown more particularly in Figure 6'. I

A short shaft 241 is mounted for rotation in the casing 141 and carriesa gearwheel 25 engaging the rack 23 and is also provided with an arm 26depending'from the inner end. I

Extending throughthe casing 14 is a rock i shaft 27 having anexternaloperating arm 28 adapted to actuate the shaft and another arm '29 withinthe casing in position to depress the inner part of the lever-1,6 theresistance of'fthe spring 18.

Pivoted'at 30 within'the casing 1 1 is a bell crank lever 31 with onearm extending over the bolt 19 and the other arm connected at 32 toapush rod extending through the front wall of the casing 14, andterminating in a push button 3 1. A spring 35 operates to'maintain thebell crank lever yieldably against'the bolt 19 and in the notch 22 tohold the bolt yieldably in its outer position, orito' lock the bolt fromlongitudinal movement when in its inner or withdrawn position.

A spring 36 operates to hold the bolt 19 yieldably inits outer oroperative position.

Rigidly supported Within the casing 1&1 is a rack bar 37, and pivoted atone end at 38 to the casing are rack bars 39, the latter being pivotedat their alternate ends as shown. The swinging rack bars '39 are shorterthan the rigid rack bars 37 so that the latter extends beyond the formerat each end, as shown more particularly in Figure 3.

Mounted through the front wall of the casing 14- is a short shaft 40'having a turn-.

ing knob 41 at the outer end and a pointer against shaft 40 is coupledby a universal joint 43' to another shaft 44, the latter carrying a gearpinion 45 adapted to engage the stationary rack bar 37 and the swingmgrack bars 39, as hereafter explained.

Initially the bolt 19 is disposed in its,

nally to dispose its outer end beneath the inner end ,of the lever 16and lock the latter from disengagement from the stop 13.

T he knob 4E1 isthen rotated to dispose the pinion 45 in position uponthe stationary rack 37. l

The number of teeth on the rack bars will be detern'iined, and thegraduations on the dial d3 will correspond with the teethron the barsand may be varied to any required extent. For instance the number ofteeth mav be correspondingly varied.

on the stationary rack bar will require the knob ll to be rotated acertain number of times to move the shafttet to the left until thepinion 45 passes beneath the first swinging rack bar .39 and permits itto drop by its freeend in the path of the pinion and by reversing themotion of theknob the pinionu'ides over the first swingingrack bar andwhen it reaches acertain predetermined position it elevates the secondswinging rack bar and permits it to drop into the path of the pinion.This second position of the pinion corresponds to one of the graduationson the dial, known to the operator, who when this position is noted,reverses the movement of the knob 41. and causes the pinion to ride overthe third swinging rack bar, and so on through the series until thepinion mounts the upper, swinging rack bar when the continued ro--tation of the knob will cause the shaft 44 to engage the 3.111126 androtate the shaft,

2% and gear 25 and move the bolt 1.9'longitudinally against theresistance of the spring 86 and release the lever 16 which may then beun oupled from the stop 13jby actuating the outer arm 28 and theinnerarm 29, as before described. I

By varying the lengths or the number of teeth in the rack bars 39 thenumbers of revolutions of the knob ll required to move the pinion 4-5into position on the upper rack bar 39 where its continued rotation willactuate the arm 26 to withdraw the bolt 19, Thus the set of the lockmaybe varied to an almost unlimited extent, as will be obvious.

The improved device is simple in construction, can be manufactured ofany required size, of any required proportions or of any requiredmaterial, and will operate effectually for the purposes described.

The preferred embodiment of the invention is disclosed in the drawingsand set forth in the specification, but it will be understood thatmodifications within the scopeof the claimed invention may be made inthe construction without departing from the principle of the inventionor sacrificing any of its advantages.

Having thus described the invention,what

claimed as new is z-- i 1. A combination lock including a movable bolt,means for actuating the bolt, a plurality ofrack bars pivoted'to swingat their alternate ends, and a shaft carrying a gear pinionconsecutively engageable with said rack bars, said shaft operative to engage the bolt moving means when the pin ion arrives, at a predeterminedposition on the rack bars.

2. Acoinbination lock including a movable bolt, means foractuating thebolt, a pivoted locking lever engageableby the bolt when in oneposition, a plurality of rack bars pivoted to swing at their alternateends, and a shaft carrying a gear pinion consecutively engageable withsaid rack bars, said shaft operative to engage the bolt moving means torelease the locking lever when the pinion arrives at a predeterminedposition on the rack bars. i 1

3. A combination lock including a movable bolt, means for actuating thebolt, a stationary rack bar,a plurality of rack bars coacting with thest'ationaryrack bar and pivoted to swing at their alternate ends, and ashaft carrying a gear pinion consecutively engageable with said rackbars, said shaft operative to engage the bolt moving means when thepinion arrives at a predetermined position on the rack bars.

4. A combination lock including a movable bolt, ineans for actuatingthebolt', a pivoted locking lever engageable by the bolt when in oneposition, a spring operating to hold the lever yieldable in oneposition, means for moving said locking lever into releasing positionagainst the resistance of said spring, a plurality of rack bars pivotedto swing at their alternate ends, and a shaftcarrying a gear pinionconsecutively engageable with said rack bars, said shaft operative toengage the bolt moving means when the pinion arrives at a predeterminedpositionon the rack bars. H a

, A combination lock including a movable bolt having a gear rack, a gearengageable with said gear rack, a plurality of rack bars pivoted toswing at their alternate ends, and a shaft carrying a gear pin- 1011consecutively engageable with said rack bars, said shaft operative toengage the gear wheel and thereby actuate the bolt when the pinionarrives at a predetermined position on the rack bars.

6. A. combination lock including a movable bolt having a gear rack, ashaft having a laterally directed arm, a gear on said shaft engagingsaid gear rack, a plurality of rack bars pivoted to swing at theiralternate ends, a shaft carrying a gear pinion consecutively engageablewith said rack bars, said shaft operative to engage the laterallydirected arm and rotate the gear and thereby actuate the bolt when thepinion arrives at a predetermined position on the rack bars.

7. In a device of the class described, coacting casings adapted to beattached respectively to a door and its frame, a stop member in one ofsaid casings, a lock lever swingingly mounted in the other of saidcasings and having a terminal hook engageable with said stop member, amovable bolt in the casing which supports the lock lever and operatingwhen in one position to hold the lock lever in engagement with the stop8. A combination lock including a cas- I ing, a bolt movable in saidcasing, means for actuating the bolt, a plurality of rack bars pivotedto swing at their alternate ends within said casing, a shaft carrying agear pinion consecutively engageable with said rack bars, said shaftoperative to engage the bolt moving means when the pinion arrives at apredetermined position on the rack bars, and a graduated dial upon saidcasing, and a pointer on said shaft coacting with the graduations on thedial to denote the position of the pinion relative to the swinging rackbars.

In testimony whereof, we affix our signatures hereto.

CHARLES J. ANDERSON. WILLIAM H. VAN DYKE.

